CN104456413A - Collimating device for LED array area light source - Google Patents
Collimating device for LED array area light source Download PDFInfo
- Publication number
- CN104456413A CN104456413A CN201310420803.8A CN201310420803A CN104456413A CN 104456413 A CN104456413 A CN 104456413A CN 201310420803 A CN201310420803 A CN 201310420803A CN 104456413 A CN104456413 A CN 104456413A
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- CN
- China
- Prior art keywords
- led
- light source
- array area
- collimating
- led array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
Abstract
The invention discloses a collimating device, with compact structure, for an LED array area light source, relates to the field of non-imaging LED illumination, and solves such problems as large divergence angle, decentralized energy and low light energy utilization rate in a traditional LED illuminating system light source. The device comprises an LED cooling aluminum baseplate, LED chips, an LED packaging shell and an LED collimating lens component. The collimating lens component is formed by arranging unit lenses as many as the chips in arrays and combining as a whole. The LED chips are across arranged and packaged on the cooling aluminum baseplate by equal intervals, and are protected through the LED packaging shell; finally, approximate parallel light can be emitted by the LED collimating lenses; and the collimating device has higher collimating effect and higher energy utilization rate.
Description
Technical field
The present invention relates to non-imaged field of LED illumination.
Background technology
LED has the features such as light decay time length, energy-conserving and environment-protective, volume be little, is a kind of lighting source of novel low carbon, along with the development of LED technology, great power LED application is in all fields quite extensive, as street lamp, signal lamp etc., LED will become the main product thrown light on from now on.
Except laser, general light source is generally scatter-type light source, and the angle of divergence is comparatively large, and the angle of divergence of such as LED light source is very large, generally at 120 degree.In long distance illumination application, need to export light to LED carry out collimation process, the method usually adopted carries out secondary optical design to LED exactly, adds collimation lens and collimates.Many methods are had to collimate LED light source at present, such as add reflector collimation, lens combination collimation etc., to being that reflector collimation can only collimate the light of wide-angle, the degree of depth of low-angle collimate light reflector just being required comparatively dark, making volume larger; Lens combination collimation then with the addition of the cost of lens, too increases the absorption of material to light simultaneously.
To sum up telling, existing exist the problems such as the poor or efficiency of light energy utilization of collimating effect is lower to area source collimation technique.
Summary of the invention
The present invention is to provide a kind of LED light source collimator apparatus with height collimating effect and high light energy utilization rate.
For solving appeal technical problem, the LED array area light source collimation device that the present invention realizes comprises LED radiator aluminium base plate, LED chip, LED shell, LED collimation lens subassembly.LED light source array of telling directly is encapsulated on LED radiator aluminium base plate by LED chip array type (also can arrange as required); ensure that the heat that LED produces can leave in time; work under normal temperature environment, LED shell is then for the protection of LED chip.LED collimation lens subassembly is then placed in directly over LED chip array, and the distance of distance chip is the focal length of collimator lens assembly single-element lens.
Collimator lens assembly single-element lens operation principle: unit collimation lens divides birefringent collimator and inner total reflection to collimate two parts.Light and the angle being optical axis with the LED central shaft light within the scope of 45 degree is through upper and lower two free form surface part lens birefringent collimator, and first the light being greater than miter angle degree scope collimate through the total reflection of free form surface through superrefraction again.Single-element lens can collimate the light within the scope of LED chip 120 degree, and efficiency is 81%.
Collimator lens assembly single-element lens center thickness of the present invention is 4.7mm, and bore is 14mm, at exit plane place extension 1mm, required single-element lens is combined formation entirety by congeneric lens material.
There is certain distance in collimator lens assembly and LED chip, the high temperature also preventing LED from producing while ensuring good collimating effect causes PMMA material to produce influence of crust deformation to the collimation of light.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is collimator lens assembly partial structurtes two-dimensional structure schematic diagram.
Fig. 2 is the threedimensional model of LED array area light source collimation device.
Detailed description of the invention
By LED chip according to arrayed on aluminium base, precision welding communication line, is fixed on chip on LED radiator aluminium base plate by welding, then is assembled on chip by LED shell, protect IC.
As shown in Figure 1, the two-dimensional structure schematic diagram of LED array light source collimator lens unit lens of the present invention, from the light in 45 degree, optical axis through upper and lower two freedom comprehensively after, form the emergent light very little with optical axis included angle.Be greater than the light within the scope of 45 degree, at lens periphery and air contact surfaces place after superrefraction, after being once totally reflected, form the beam projecting lens very little with optical axis included angle.Can collimate the light within the scope of 120 degree according to design cell lens, the efficiency of light energy utilization is 81%.
Collimator lens assembly, by multiple single-element lens array type close-packed arrays, finally by all single-element lens composition formation entirety, is added four screw holes, is convenient to the fixed installation of lens in the outer ring of collimator lens assembly.Distance between collimator lens assembly and LED radiator aluminium base plate is accurately reached by pad.
Claims (6)
1. a LED array area light source collimation device, this device comprises LED radiator aluminium base plate (1), LED chip (2), LED shell (3), LED collimation lens subassembly (4).
2. it is characterized in that: LED is fixedly encapsulated on LED radiator aluminium base plate; and in conjunction with LED shell protection LED chip; each chip position is in the focal position of lens subassembly single-element lens, and the single-element lens of lens subassembly is made up of birefringent collimator and reflection collimation two parts.
3. chip sends from the less light of optical axis angle by refracted portion collimated, and from the larger light of optical axis angle by reflecting part collimated, the boundary angle of refraction and reflection is at 45 degree.
4. according to a kind of LED array area light source collimation device that claim 1 is told, it is characterized in that: in this device, LED radiator aluminium base plate thermal conductivity factor is that 2.0(also can choose according to requirements), LED chip size is 45mil, and the use material of lens subassembly is glass material or PMMA material.
5. a kind of LED array area light source collimation device told according to claim 1 and 2 is applicable to collimating more accurately the light of various wavelength.
6. according to the LED array area light source collimation device that claim 1 is told, it is characterized in that: the angle of divergence of described LED array light source is less than 6 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420803.8A CN104456413A (en) | 2013-09-16 | 2013-09-16 | Collimating device for LED array area light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310420803.8A CN104456413A (en) | 2013-09-16 | 2013-09-16 | Collimating device for LED array area light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104456413A true CN104456413A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310420803.8A Pending CN104456413A (en) | 2013-09-16 | 2013-09-16 | Collimating device for LED array area light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104456413A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953175A (en) * | 2016-06-20 | 2016-09-21 | 杭州光锥科技有限公司 | Projection lamp lens, light-emitting module with projection lamp lens and projection lamp |
| CN108916760A (en) * | 2018-08-09 | 2018-11-30 | 吉林省威科拓科技有限公司 | A kind of novel remote large scene headlamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866671U (en) * | 2010-10-15 | 2011-06-15 | 重庆科鹰电气有限公司 | LED headlamp used on vehicles and motorcycles |
| CN202392644U (en) * | 2011-12-21 | 2012-08-22 | 江阴长江电器有限公司 | Light emitting diode (LED) working lamp for engineering vehicle |
-
2013
- 2013-09-16 CN CN201310420803.8A patent/CN104456413A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201866671U (en) * | 2010-10-15 | 2011-06-15 | 重庆科鹰电气有限公司 | LED headlamp used on vehicles and motorcycles |
| CN202392644U (en) * | 2011-12-21 | 2012-08-22 | 江阴长江电器有限公司 | Light emitting diode (LED) working lamp for engineering vehicle |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953175A (en) * | 2016-06-20 | 2016-09-21 | 杭州光锥科技有限公司 | Projection lamp lens, light-emitting module with projection lamp lens and projection lamp |
| CN105953175B (en) * | 2016-06-20 | 2022-09-06 | 浙江光锥科技有限公司 | Projecting lamp lens, have light-emitting module and projecting lamp of this projecting lamp lens |
| CN108916760A (en) * | 2018-08-09 | 2018-11-30 | 吉林省威科拓科技有限公司 | A kind of novel remote large scene headlamp |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |
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| WD01 | Invention patent application deemed withdrawn after publication |